Feeding device for winnowing machines



J.. M. HENRIKSEN FEEDING DEVICE FOR WINNOW ING MACHINES Filed Mar. 51,1921 IV VE VTO/i"; 72m Madsen flerzriiisen E Patented ar. 6, 1923.

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J'E'NS MADSEN HENRIKSEN, F SLAGELSE, DENMARK, ASSIGNOR TO A/S JENSNIELSENS MASKINFABEIK, OF VESTERAABY, DENMARK.

FEEDING DEVICE FOR WINNOVTING MACHINES.

Application filed March 31, 1921. Serial No..457,472.

To all whom it may concern:

Be it known that I, Jens MADSEN IIEN- RIKSEN, a subject of the King ofDenmark, residing at Slagelse, in the Kingdom of Denmark, have inventednew and useful Improvements in Feeding Devices for Winnowing Machines,of which the following is a specification.

The present invention relates to a feeding device for winnowingmachines. In the commonly existing feeding devices for winnows, the feedto the winnow is regulated by the position of feed roller being variedin such a manner that the area of the discharge opening is altered. Thedemand for fine adjustment fixes rather narrow limits, however, inrespect to how much the pins or ribs of the feed roller may projectbeyond the circumference of the roller. Besides, there may appeardifficulties in the feed, when the discharge area is decreased,especially if coarser impurities, such as stalks, straw or the like, bepresent in the material.

These drawbacks are avoided completely in the present invention by theadjustable feed roller being arranged to swing in relation to a rotaryroller with fixed bearings close to the bottom opening of the feedhopper or a rod or the like fixed there in such a manner that the areaof the discharge opening remains unchanged whether the feed roller beadjusted for a greater or smaller feed, so that the quantity of materialfed will not be dependent on the area of the discharge opening but onlyon the position of the swinging roller.

The invention, in two different examples of constructing the same, isillustrated on the drawing, where Fig. 1 shows a vertical cross-sectionof the feed hopper,

Fig. 2 the same viewed from one end Fig. 3 a portion of. the same,viewed from above,

Figs. 4 and 5 vertical cross-sections of a feed hopper, where therollers are arranged otherwise than in the construction shown in Figs. 1to 3, the rollers being shown in two different positions relatively toone another.

In the construction shown in Figs. 1 to 3, 1 is the feed hopper and'2 aroller secured to a shaft 5 which is journalled in bearings at the endwalls of the hopper and placed close to the outlet from the hopper,Outas side the roller 2 there is provided a roller 3 secured to a shaft16 which is journalled in flat end plates 4, revoluble freely about theshaft 5 of the roller 2, Fig. 1, 6 is a curved wall fixed on the feedhopper 1, below the out-let of the latter, and 7 an equally curved wallplaced in firm connection with the end pieces 4 andshaped and arrangedso as to fit tightly against the screen 6 and so as to slide below thelatter, when the roller 3 is swung downward from the position shown inFig. 1 in full lines. 'After being carried forward by the roller 3, thematerial to be winnowed slides down to the winnow along a wall 8forming, in combination with a wall 22, an outlet hopper for thematerial fed for ward.

The shaft of the roller 2 is rotated in suitable manner, and therotation of this shaft is transmitted, by means of gear wheels 9 and 10,Figs. 2 and 3, to the roller 3, so that the direction of rotation of thelatter is opposite that of the roller 2.

Th roller 3 is fitted with ribs 11, battens or the like, while theroller 2 may be fitted with pins 12 or the like.

The roller 2 serves to convey th material towards the roller 3 being thefeed roller proper and carrying the material forward, in larger orsmaller quantities, to the winnow. When the roller 3 is adjusted intothe position shown, in full lines, in Fig. 1, it

conveys a relatively small quantity of ma-' terial, while it takes morealong when set lower in relation to the roller 2.

The adjustment of the roller 3 may be effected in any manner. There may,for instance be provided teeth 13, engaging a gear wheel 14 or a worm,on the end pieces 4 at their upper edges concentric with the roller 2.lVhenthe roller 3 is to be adjusted, the gear wheel 14 is rotated, inone or the other direction, by means of a crank handle not shown on thedrawing, whereby the roller 3 is either lifted or lowered in relation tothe roller 2.

Instead of the roller 2, there may be provided a rod, located along thelower aperture of the feed hopper and serving as a shaft for the end.pieces 4 to rotate about.

In the manner of constructing the feeding device shown in Figs. 4 and 5,the feed roller proper 3 is fixed in position and rotatable only aboutits own axis, while the auxiliary roller 2 is journalled in arms orplane end pieces 4, rotatable about th shaft 16 of the roller 3. Theshaft 5 of the roller 2 is con nected to a wall 18, which may be shiftedup or down in slots 19 in fixtures 2O fastened on the feed hopper 1 Whenthe rollers occupy the position shown in Fig. 4, only a small quantityof material is fed to the winnow, while in the position of the rollersshown in Fig. 5, a larger quantity of material is conveyed.

Having now particularly described and ascertained-the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In a feeding, device for winnowing niachines; thecombination with a feed hopper of a pair of I'evoluble feed rollershaving a fixed distance from each other, and means for altering theposition of said pair of feed rollers relatively to the dischargeopening of said hopper, whereby the quantity of material fed by saidrollers may be adjusted.

2. In a feeding device for winnowing machines, the combination with afeed hopper, of a pair of revoluhle feed rollers havlng a .fixeddistance from eachother, one of said feed rollers having a fixedposition relatively to the discharge opening of said hopper while theother feed roller is adapted to be oscillated about the axis of saidfirst named feed roller, means for oscillating said oscillatory feedroller, whereby the position of said pair of feed rollers relatively tothe discharge opening of said hopper may be altered.

In testimony whereof I have signedmyname to this specification in thepresence of two subscribing witnesses.

JENS MADSEN HENRIKSEN.

l Vitnesses V. BUsoHNER, J. M. SEN.

